What is thermal cycling?

NBK offers screws which can be used to handle high-temperature environments and thermal cycling.

＜High-temperature environments＞
Screws withstanding high-temperature environments are available.
Tungsten and pure molybdenum materials boast high melting points (3683°C for tungsten, 2623°C for pure molybdenum).
Contact our customer service for other materials.

Material	Tungsten	Tantalum	Inconel	Pure Molybdenum	Silicon Carbide (SiC)	Al2O3（99.5％ Alumina）	VESPEL SP-1
Part Name	Slotted Cheese Head Machine Screws (Tungsten)	Hex Socket Head Cap Screws (Tantalum)	Socket Head Cap Screw -Inconel equiv	Hex Socket Head Cap Screws - Molybdenum	Slotted Pan Head Screws (Silicon Carbide)	Ceramic Hex Socket Head Cap Bolts	Plastic Screw - Socket Head Cap Screws - VESPEL（Grade：SP-1）
Part Number	SNCW	SNSTA	SNSI	SNSM	SICX-SX	SCX-C	SPD-C
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＜High-temperature + vacuum environments＞
Degassing holes for vacuum equipment are machined on heat-resistant materials.

Material	Inconel	Pure Molybdenum
Part Name	Hex Socket Head Cap Screws (Inconel equiv.)	Molybdenum Hex Socket Head Cap Screws with Ventilation Hole
Part Number	SVSI	SVSM

＜Seizing prevention＞
Screws resistant to galling and seizing in thermal-cycling environments are available.

Material	SUS316L	SUS316L	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)
Part Name	Hex Socket Head Cap Screws - SUS316L / Surface hardening treatment	Hex socket Head Cap Screws with Ventilation Hole / Surface Hardening Treatment	Hex Socket Head Cap Screws - MoS2 Coating	Hex Socket Head Cap Screws - Low Temperature Black Chrome	Hex Socket Head Cap Screws - PTFE Coating	Hex Socket Head Cap Screws - Gold Coating	Hex Socket Head Cap Screws - Fluorine Coating
Part Number	SNSL-PN	SVSL-PN	SNSS-MO	SNSS-RY	SNSS-TF	SNSS-AUS	SNSS-FC
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＜Loosening prevention＞
Integrated washer type screws are available. Spring washers are used to absorb thermal expansion and help prevent loosening.

Material	SUSXM7 (Equivalent to SUS304)	SUS316L	SUS316L	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)
Part Name	Hex Socket Head Cap Screws with Captive Washer and Ventilation Hole	Washer Integrated Hex Socket Head Cap Screws with Ventilation Hole - High Strength Stainless Steel	Washer Integrated Hex Socket Head Cap Screws - High Strength Stainless Steel	Hex Socket Head Cap Screws with Captive Washers（I=3）	Phillips Cross Recessed Pan Head Machine Screws with Captive Washers（I=3）
Part Number	SVSQS	SVSQLG	SNSQLG	SNSQS	SNPI3S
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Material	TW340 (Grade 2 Titanium)	Equivalent to SUS304	Equivalent to SUS304
Part Name	Titanium Hex Socket Head Cap Screws with Captive Washers（I=3）	Hexagon Head Screws with Captive Washer(P=2)	Hexagon Head Screws with Captive Washer(P=3)
Part Number	SNSI3T	SNHP2S	SNHP3S
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Problem Solution Examples by Semiconductor Manufacturing Process

Problem solution examples are introduced by semiconductor manufacturing process.
Pre-process here
Post-process here

"The Semiconductor Industry and NBK" back numbers

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